A French drainage system, also known as a French drain, is a highly effective and widely used solution for managing excess water in various landscapes. This drainage system consists of a trench filled with gravel or rock and a perforated pipe, designed to redirect water away from specific areas. The French drain works by allowing water to enter the trench, where it then flows into the perforated pipe and is carried away to a designated drainage point, preventing water accumulation and potential damage.